Rotary engine.



A. A. UND.

ROTARY ENGINE.

APPLICATION FILED AFR.22. 1918. 7%?. Meme@ Sein.. 3,1918.

2 SHEETS-SHEET 2.

Cri

showing the inner' and outer members tol huye turned n tln'ee-qmirter turn in the direction ot the arrow :r ot Fig. 1l.

Fig. 5 is en elevation showing the inner und outer memllu-us ot' the motor portion only of my invention, the inner und outer members ot the motor being in the positions they assume when the inno' und outer members of the pump portion are in the positions shown by Fig. 1.

Fig. t3 is u corresponding View to Fig. 5, but shows the inner and outer members of the motor in the positions they assume when the inner and outer members ot the pump portion uro in the positions shown by Fig. 2.

Fig. 7 is a corresponding view to Fic. 5, und bears the sume relation to Fig. 3 as does Fig. 5 to Figi.

Fig. S is u corresponding View to Fig.. 5. und bears the sume relation to Fig. '-i as does Fig. to Fig. l.

Fig. 9 is a section teken in the planes indicated by line 9-9 ot' Fie'. l but-developed into u common plaine, showing also means oi mounting the rotating mechanisms und V gearing them together.

Pig. l0 is u section token in the plane indicated by line 10--10 of Fig. l; und,

Fig. ll is an end View ot' the apparatus shown by Fig. 9.

l represents the outer member of the pump7 from the inner periphery o'twhich project two tongues 2, 3, which are opposite'ly disposed. usshown, und 4 represents the inner member which liu-s two recesses 3 und 6 within which the. tongues 2, 3, re.- spectively, enter. r)The motor also hes un outer member 7 which has tongues Tilt. and l2 and. an inner'meinber 8 which has recesses 13 and it, uil of which correspond with the outer and inner members ot the tongues and recesses of the pump. The outer members 1 "I and 'i' ure rigid with one ui'iotherMand the inner members ft and 8 ure also rigid with one another. 15 is a mid-well which is rigid with the outer members, und. 16 und 17 are the outer wulls ot' the outer members, res'fnlctively. 1S and 19 (shown by broken line circles Figs. i to 4:), ure inlet ports for the pump, which are formed through the outer wall 'lo oi the pump. 20 und 2l ere transfer ports between the pump und motor which are 1."orl'ned through the well 15, Iind and are exha ust ports 'from the motor 4which ure formed through the outer well 1'? ol the motor. The outer members l and 7 are arranged to rotate ubout the stationery center ol' such members, and the inner members Lemie? t und 8 are arranged to rotate about their stutionary center which is eccentric. to the center about which the members 1 und 7 rotate so as to insure thut. u portion ot' the periphery ol each member l und S will ulwuys be touching', or in close proximity to. u portion oli the inner periphery o't' the corresponding outer member. Each recess o und (i is formed with curved ends, as shown. leaving lips or projections 2l 01225. and each side ot each tongue 2 or 3 is concu rely curved. forming-recesses which leave `lips or projections 26 or 2T, and during some, portion oi' euch rotation of a pair ot' members, each lip Z-l or 25 is within the curved recess ut the corresponding side ot the adjacent tongue. The curves at. either side ot euch timgue-zn'e struck with a. adius equal to thc. distance apart ot the centers of the inner und outer members, plus half the thickness of the lips 2i or 25 ot the recesses 5 and (S. Likewise, the curves at euch end of the recesses and 6 are struck with a radius equal to the distance apartd of the centers ot the members plus half the thickness ot the lips 2G and 27 of the tongues.

One or other or' the lips of. euch recess is always wiping around the corresponding curved side ot the adpeent tongue, and likewise one or other of the lips of euch tongue is always wiping around the corresponding` curve of the. corresponding recess. The curve of the inner fece of each tongue is struck trom the center of the outer member, und the inner curve ot' euch recess 5 or 6 is struck from the center of the inner member. The member i' is formed with tongues 1l and l2 which correspond to the tongues 2 and 3, :md the member 8 is formed with recesses 13 und 14 which correspond to the recesses 5 and 6, but the members 7 und 8 are, euch'ot' them, in angular advance of the correspondinger member of the pump portion of the engine, lfor the purpose which will be presently shown. l

The action oi the apparatus is as follows z-Assuming the inner und outer members to be in the positions shown by Figs. l und the inlet port 18 ot the pump is in comm...iicution with u `space 28 which lies between one end ot the recess 5 und the corresponding curved side oi the tongile 2, but this spuceis cut-ott' by one of the lips 24. from the chamber 2S) which is formed between the periphery of the member L` and the` meinber 1, und consequently from the trunstenport 20, and is cut ofi by one of the lips 26 of the tongue 2 from' communieating with the transferI port 21 et the opposite side ot the tongue? Ylhon the inner und outer members have rotated from the positions shown by Figs. l und 5 into the positions shown by Figs. :2 and o, the space 28 hns considerably`en-` lurgcd und is tillcd with the charge of com- 'largerfh having merged into the space i.; 'ingest bustible mixture or air W'iieh has been drawn in through the inlet opening 18, 'and this space is cnt oft from the transfer port 2l at the opposite side of the tongue, as the lip 26 at said opposite side of the tongue is at the time 1wiping around the concave snraee of the corresponding end otf the recess 5. The transfer port 20 is still cnt ollE trein the inlet. port4 18, namely by a portionoit the periphery of the rneinber el contacting ivith a portion ot' the inner periphery et the member 1.

When the inner and outer nieinbers have rotated a further quarter turn, bringing; thein` inteA the positions shown by Figs. 3 and 7, the space 25S has considerably en 29, ivhile the transfer port 2O stil-l remains ont off therefrom.

ll'vhen the inner and onter members have rotated a further quarter turn, bringing them into the positions shown by Figs. l and S. the combined spaces 2.8 and Q9 have beeonie considerably enlarged, but. the inlet port 18 is still cnt oil" from the-transfer port 20, namely by one of the lips 25 wiping around the corresponding;` curved side o't the tongne 3.

`Wl1cn the inner and enter members have rotated a still further quarter turn, bring ing tliern back into the positions shown by Figs. l and 5, one of the lips is about to open the transfer port 20, and in further turning' 'movements of the nunfibers, which bring' thorn into the positions shown by Fi Zand G, charge contained withinl the space 29 passes through the transiter port EL() into the space $3() which is iii/closed between one ot the lips -ll or" the ineniber 8 and one of the lips 3Q of the member 7, such space eX- panding' by the movement olt the member O o in relation to the nieinber 7, to the size shown by Fig. 7, the Charge being then fired. By further rotation of the members the space 30 further expands, as shown by Fig. S and by 4ifurther nioveinent of the members the tra ster port 20 is closed, by one ol the lips 25 of the member 4, as shown by Fig'. l, and the eliatnl'ier 30 contilines to expand until the exhaustk port 22 is opened, as shown by F G, and allows the burnt gases to exhaust.

The action in relation to onevside of each ot the inner inelnbers 4 and 8 in relation to the coi'respondingr eide of the members-l and 7, respectively, which will new be nnderstood, is the saine also Jfor the other side, as

will also be understood; and it will now be seen that, for each entire rotation of the inner and outer members of the engine, two charges of combustible mixture or air are drawn in by the pinnp and are transferred to, and the charge fired within, theV motor.

The members 4: and 8 are both o thein rigid with a ,shaft 34 which is carried in bearings-35 which are supported .troni the bed-plate 36, and the members l and 'i' are carried by hollow axles 3T and 38 Which are formed ywith the side 'plates lt, ll", res1iiectively, and are carried by bearings 39, lt), respectively', which are supported from the bed-plate 3G. The axle 3l is geared with the axle 58 throngtgb the niedinni ot a spur-wheel ll on the axle Ell Vwhich gears with a spur-Wheel on an intern'iediate axle 43, and a spureivlieel ll on the axle lil which gears with a spur-wheel on the axle at distribnter 4G, which consists substantially oil" a circular plate #15T and a riin ad,

is carried by Jthe .standard 49 which snp-` ports the bearing1 239, with the edge otite riin 48 just touching` the outer tace ot' the side plate lb ol the member l. (Qfoinbustible mixture troni the carlnireter, or air, is drawn into this distributor tl'irough an opening 50 and is drawn troni the distributor through theinlet ports 1S by the interaction of theA members l and it. v

.jl indicates o e ol the sparking-plugs, ivliich receives curi-ent through the niedinni ot a slip ring' and brush t it lins 54;, which are earried by the mein bers l and l', pass through circular Chain bers which are termed in the members 4 and S, the interaction between the pins and the cylindrical Walls et the elianibers insuring that the members l and T and the n'ieinbers Ll and S will rotate evenly at the saine speed, and preventing substantial pressure occurringv between the tongues and the surfaces which internet therewith. The gear wheels,however, prevent undue fric tion between the eoneting snrifases ol the inner and outer Aembers.

Haring' fully described rny inveiilion, wl at l claiin and desire to seein', by Letters Patent, isc* l l. ln a rotary internal combustion engine, two pairs of members et' which one of the members oit each pair is of larger diameter than and is mountedVeccentrieally te the other and adapted to perform eeeentrie nieveinents in relation to the other, each pair of said members having` projections and reeesses, the projections of one ineinber operating Within the recesses, respectively, of the other member with a movement of revolntion therein as distinct, 'from rotation, said 'llO and contract as the members nieve relatively to one another,4 each projection operating only Within the recess to which itconstantly corresponds, a division between the pairs of n'ieinbers, a transfer port, communicating between opposite 'sides of such division, which is controlled by one of the said members, and one ypair of the members operating as a pump to draw in air or combustible mixture and deliver it to the other pair which operates as a motor.

2. In a rotary internal combustion engine, two pairs of members of which one or' the members of each pair is of larger diameter than and is mounted eccentrically to the otherand is adapted to perform eccentric I movements in relation to the other, each pair of said members having projections and recesses, the projections of one member op-` erating within the recesses, respectively, of the other member with a movement of revo,- lution therein as distinct from rotation, said projections and recesses having curved snrfaces which wipe over'one another by relative movement between the members, compression and expansion spaces between the members which are closed by said projections and Arecesses .and alternately expand and contract as the members move relatively to one another, each projection 'operating only within the recess to which it constantly 1 3; Ina rotary internal combustion engine,l

two pairs oflmembe'rsofrwhich one` o the members: offeach pairis of larger diameter than. and is mountednieccentrically to the tions and. recesses and alternately expand and contract as the members move relatively to one another, each projection operating only within the recess to which itV constantly corresponds, a division betweenthe pairs of members,- la transfer port, connnuiricating between opposite sides of such division, which'iscontrolled by one oi the said members, one pair or" the men'iliersoperatingr as a pump to draw inl air or combustible mixture and deliver it to the other pair whichn operates as a motor, and `the one pair of memhers'set in relation to the other pair to insure that, as the one pair. of the members is commencing .tov "compress in a chamber thereof, the transfer port Will open to an ex'- pansion chamber of the other pair of members, allowing the 'compressed 4fluid to pass from the compression chamber of the one pair of membersV to an expansion chamber of the other pain In witness whereof I have hereunto signed my name this 6th day of March, 1918, in the presence of two subscribing witnesses.

y Al-VID ANDERSSON LIND. `Witnessesz JACOB Bacon,

FRANK' LYON. 

